For some of the best, making and guiding companies is their art and obsession.

That's the nice take on it.

For others (or from a different perspective) for some making money itself is a bit of an addiction that swallows everything else.

I know a great guy -- very kind, very smart. But he doesn't really know how to have fun if he's not making money. That's his game and he's great at it. But I feel like he's missing out on a lot out of life. And he understands that on an intellectual level. But he can't imagine doing anything else.

I am personally very conflicted when it comes to people who almost insanely dedicate themselves to one pursuit. On one hand I feel sorry for them because I feel like they miss out on a lot. On the other hand, I'm very glad they exist. They do things no one else can or will do and our world is better off for it.